I gave many many hours of my time at a Sight challenged charity converting audio tapes to CD for the blind, each conversion had to have a audio described voiceover which was me, this included the author, book title, plus the the chapters, the reason they wanted this done was many a time a tape would come back damaged or the quality from endless playing was poor, the charity had a special licence to cover doing this, the originals tapes had to be stored away to show they had them, some of these books had up to 20 cassettes, after about 18 months I could see the light at the end of the tunnel, with the pile of cassettes to be done thinning down, I could recite in my sleep all the legal jargon that had to be added to the recordings which was done on good quality and expensive equipment, then one day another charity donated another few thousand tapes, at this stage I was happy to hand the job over to someone else as we were moving south in a few weeks, so I had the chance to train them and finish of the last few tapes before the new bunch got started.